An H.G. Wells ONE WORLD vision ?

It might sound " utopian " but for more than a century THE VISION of SOCIALIST INTERNATIONALISM persisted of a WORLD WITHOUT BORDERS. Without ruining the more prosperous countries there can be socially engineered a system of WORLD ECONOMIC ORDER . Every one of 8 billion people becomes a completely secure CITIZEN OF THE WORLD. The WORLD as seen from the famous Moon trip back in 1968 - essentially ONE . Today the NATION STATES of the world are a sort of prison system where it is a personal calamity to lose your papers, loose your PASSPORT. We can imagine a sane EQUILIBRIUM of emigration and immigration in a WORLD COMMUNITY. People with important skills- or just friendly CURIOSITY - can live and work anywhere on the planet without losing their HOME base. There can be ONE world currency. And no need for separate military and police forces of the old nation-state system. Even language barriers will break down.. Right now the more sophisticated cell phones can translate foreign languages for you -and not too awkwardly. I once opened a Chinese book in a public library and got a roughly satisfactory translation ( in contrast to it being more like Egyptian hieroglyphics ) [ actually even these can be fairly well translated ! ] Before the end of this century we can all become sophisticated CITIZENS OF THE WORLD . We will forget all our vulgar cuss words for the despised OTHER in a world full of friends and neighbors. Losing it claws ," American imperialism " can take the lead in a true GOOD NEIGHBOR POLICY . Why can't the whole world be like one big New York City in its glory days ?